I tried that but it didn’t work. I ended up creating a new user in Pardot and was able to sync that way, so it works for now, but this is a pretty kludgy workaround.
@barryhughes-1 the problem still persists, for me anyway. I’ve tried all of the remedies listed in other threads and I’m still getting:
“Cannot authenticate. Please check the fields below and click “Save Settings” again.”